Railway-frog



` when they become loosened with the use of Y a'horizontal section taken below the heads of ends, and of any suitable construction for the UNITED STATES PATENT OFFICE.

AXEL A. STROM, OF AUSTIN, ASSIGNOR TO THE STROM MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

RAI LWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 416,690, dated December 3, 1889.

Application filed August 22, 1889.

To all whom it may concern:

Be it known that I, AXEL A. STROM, a citizen of the United States, residing at Austin, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Railway-Frogs, of which the following is a specification.

My invention relates to an improvement in the class of railway-frogs in which clamps are employed in securing the parts of the frog together; and it relates particularly to means for tightening such parts between the clamps the frogs, the object of my improvement being to provide simple and reliable means for the purpose. t

In the accompanying drawings, Figure l is the rails of a railway-frog provided with my improvement; Fig. 2, a similar view of a broken portion of the same illustrating a modiiication; Fig. 3, a section taken on the line 3 of Fig. l, viewed in the direction of the arrow and enlarged; Fig. et, a perspective View of my improved key, and Fig. 5 a similar view of a slightly-modified construction of the same. 4

The frog involves the usual wing-rails A and pointrails B, braced intermediately by lling C or otherwise, and secured together by means of clamps D and D', embracing the frog respectively near its wider and tapering purpose, though involving preferably that shown-namely, a flat metal bar having its ends turned edgewise of the bar toward each other and affording hook-shaped extremities r and i", which conform to the surfaces of the outer flanges and webs of the wingrails, to which they are brought adjacent in their adjustment. The extremities of the ends r should extend short of the sides of the web of 4 the wing-rail to which they are adjacent, with the clamps in their adjustedv positions, and thus leave spaces to permit insertion of the tightening-keys E.

The keys E are of the ordinary wedge shape or tapering form; but each is provided with an extension q, preferably at its rear or wider end, as shown, affording a shoulder p at such sain No. 321,631. (No moda end at which to drive it. The extension q is provided lengthwisev with apertures 0, as shown by full lines, or with a slot o', as indicated by dotted lines, and may be in line with a wider iiat side of the key, as illustrated in Fig, 4, or with a narrower side, asillustrated shown in Fig. 4 through the web of the wingrail into a recess m in the'iilling C, where the latter is provided, wherein it is screwed into a nut Z, coniined in the recess m. Where the key is providedlwith the form of extension q shown in Fig. 5, which coincides flatwise withtheouter flange' of the wing-rail when the key is driven into place, the key is secured by a bolt fn, passed through an opening o or slot o and through the rail-flange, and fastened by a nut (not shown) below the flange. With either construction of the key, to permit it to be driven for tightening the parts of the frog, the bolt holding it must first be removed, Where the perforations o are provided, or loosened if the extension q be slotted, the provision of the apertures necessitating that the driving of the key shall always be to a sufficient extent to bring a hole o coincident with that in the web or in the flange of the wingrail, as the case may be. If desired, instead of providing keys E only on one side of the frog, they may be driven between opposite ends of each clamp and the adjacent sides of the wing-rails.

What I claim as new, and desire to secure by Letters Patent, is i l. In a railway-frog, the combination, with the wing-rails A and point-rails B, of clamps D and D', embracing the frog across its base, and keys driven between the clamps and a wing-rail and secured to the said wing-rail beyond the clamp and independently thereof, substantially as described.

2. In a railway-frog, the combination,with

IOO

driven between the clamps and a wing-rail and having extensions q, provided with openings, the keys being secured to the web of the Wing-rail by bolts passed through openings in the extensions and through the said web into nuts Z, substantially as described.

AXEL A. STROM. In presence of- J. W. DYRENFORTH, M. J. FROST. 

